These highly efficient grinding discs can be used for fast and low cost levelling and surface grinding of specimens. They are normally used with the Mecaplan III surface grinding machines. The most commonly used diamon grinding discs are 150 grit. They are ideal for the levelling of steel and ferrous materials. 60 to 120 grit discs are recommended for light alloys and ductile materials.

TISSEDIAM discs are highly recommended for the preparation of very hard metallographic specimens, ceramics, carbides and composites.
Tissediam is a semi-rigid material made from synthetic fibre. It is self-adhesive and contains a uniformly distributed diamond compound with a metallic or resin bond (for rough plishing or finishing respectively).
These discs can be used under water and are suitable for all Presi polishing machines.

Metallographic grinding with cast-iron plates was first used to replace abrasive papers. It is still used for grinding large numbers of specimens in automatic processes or for single laarge specimens.

These must be suspended in mineral oil or a water soluble lubrificant.
- Aluminium oxide powders: specially prepared and classified for lapping of precision mechanical and electronic parts and for optical polishing applications.
- Silicon carbide: especially recommended for geology and mineralogy applications, it can also be used for the grinding and lapping of mechanical parts.
- Boron carbide: an extremely hard abrasive, normally used for very hard materials such as tungsten carbide and ceramics.

Abrasive papers are available in a number of forms (belts for belt grinders or rolss for manual belt grinders and for spectrography applications).
Special ZR type papers are also available, offering high strenght and high stock removal capacity.

The PRESI catalogue includes various supports such as bronze or glass plates as well as micro-abrasive discs.

MICRO ABRASIVE DISCS contain a number of abrasives (aluminium oxide, silicon carbide, chrome oxide, diamond) with grain sizes from 30 to 0.1 µm.

POLYPAT is a rough, flat, removable disc with hundreds of micro-craters forming reservoirs for 9 or 6 micron diamond slurries. Its attractive price makes it a direct alternative to abrasive papers.

BRONZE, COPPER AND GLASS PLATES are generally used for grinding or polishing operations for specific applications in geology, mineralogy, optics and electronics.